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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7368153 | Oxygen detection system for a rigid container The present invention relates to the non-invasive use of a luminescent compound to detect and measure concentrations of oxygen dissolved in a rigid container, especially a bottle, a tray, a carton, a lidstock associated with a tray, a stand up pouch, or a paperboard... | 05/06/2008 |
| 7364700 | Ozone gas sensing element, detection apparatus, and measurement method A sensing element in which a dye that changes in the light absorption characteristic of the visible region upon reaction with ozone gas is deposited in the pores of a porous material is prepared. A change in dye before and after exposing the sensing element to a mea... | 04/29/2008 |
| 7319038 | Sensor for monitoring an analyte A food spoilage sensor of the general formula wherein M is a transition metal ion; D1, D2, D3 and D4 can be the same or different and can be N or P; R1 and R... | 01/15/2008 |
| 7297549 | Method of determining measurement bias in an emissions monitoring system A method of determining bias in a measurement of a constituent concentration level in a sample gas is provided. The method comprises establishing a sample gas flow from an emission stream into a sample gas line of an emissions monitoring system. The method further c... | 11/20/2007 |
| 7262061 | Test element analysis system Test element analysis system for the analytical investigation of a sample, in particular of a body liquid of human beings or animals, comprising test elements (2) with a carrier film (5) and a test field (7) fixed to the flat side (6) of ... | 08/28/2007 |
| 7188538 | Hazardous material detector for detecting hazardous material in a mailstream The invention disclosed herein relates generally to mailpieces and more particularly, a hazardous material detector for detecting hazardous material in a mail stream. The present invention is directed, in general to detector for collecting sample (s) of hazardous ma... | 03/13/2007 |
| 7189355 | Indicator for plasma sterilization The present invention relates to a chemical indicator that is used to determine whether instruments and other products to be sterilized have experienced a sterilization treatment process or to confirm whether sterilization has been efficiently performed, by the colo... | 03/13/2007 |
| 7186373 | Visual detector for vaporized hydrogen peroxide A method and apparatus for sensing the concentration of a gaseous sterilant in a sealable enclosure. An indicator is provided that has a chemistry such that the indicator changes color when exposed to vaporized hydrogen peroxide (VHP). The chemistry is adapted to re... | 03/06/2007 |
| 7185601 | Chemically sensitive warning apparatus and method A chemically sensitive warning apparatus capable of changing colors upon contact with a chemical is disclosed. The apparatus preferably comprises an elongated tape having opposed, first and second major surfaces and warning indicia visible to an individual viewing t... | 03/06/2007 |
| 7141214 | Ethylene oxide sterilization process indicator inks Water-based chemical indicator inks for ethylene oxide sterilization processes and methods for its use. The chemical indicator ink contains at least one pH indicator dye selected from the group consisting of Bromocresol green, Bromophenol blue, Methyl red, Ethyl ora... | 11/28/2006 |
| 7022285 | Integral-multilayer analytical element for analysis of ammonia or ammonia-producing substance An integral multilayer analytical element for analysis of ammonia or ammonia-producing substance is provided, which comprises a thin liquid blocking layer having a comparative facility with a thicker liquid blocking layer and is stably fabricated on a common product... | 04/04/2006 |
| 7014816 | Food quality indicator device A food quality indicator device an indicator compound provided on a substrate. The indicator compound changes color due to the presence of volatile compounds, such as volatile bases, in spoiled food, even when the food is frozen. Alternatively, the indicator compoun... | 03/21/2006 |
| 6905711 | Antimicrobial agents, products incorporating said agents and methods of making products incorporating antimicrobial agents An antimicrobial agent includes an oligodynamic metal ion in a hydrophilic polymer binder or carrier. According to a presently preferred embodiment, the metal ion is silver and the hydrophilic polymer is polyurethane. According to a method of the invention, the anti... | 06/14/2005 |
| 6852281 | Gas indicator and gas sensor sheet The invention designed to provide a gas indicator which can be applied over a broad range of gas concentration from a low concentration gas to a high concentration gas is concerned with a gas indicator comprising a housing and a change-color gas sensor element with ... | 02/08/2005 |
| 6773925 | Detector agent for halogen compounds and method for detecting halogen compounds There are provided a detector agent which is effectively discolored at a lower concentration for various halogen compounds and a method for detecting halogen compounds by use of said detector agent. A detector agent for halogen compounds, which contains curcu... | 08/10/2004 |
| 6706537 | Sterilization monitors and method of use A sterilization monitor includes a substrate and an monitor composition. The monitor composition contains a colorant and a halogen source and undergoes a distinct color change when exposed to a peracid. The sterilization monitor can be used to monitor a sterilizatio... | 03/16/2004 |
| 6651487 | Test for brake fluid age and condition A reactive test strip having a pre-exposure color is used to measure and indicate the concentration of copper ions in brake fluid in terms of a readily visible color change. The strip is immersed in the fluid within a brake fluid container and any resulti... | 11/25/2003 |
| 6584826 | Gas tester Apparatus for testing the quality of air in sources of compressed air in which a housing forms an elongated bore closed at one end by an elastomeric bag or balloon and at the other end by a check valve to form a chamber to hold a test strip which is chemi... | 07/01/2003 |
| 6479018 | Detection of a gaseous substance emanating from a layer of polymeric composition Detection of an evolving or diffusing gaseous substance emanating from an irradiated or thermolyzed layer of polymeric composition in semiconductor processing or similar processes is disclosed. The evolving or diffusing gaseous substance is detected by sp... | 11/12/2002 |
| 6444473 | Atmospheric ozone concentration detector An ozone detector in the form of two basic embodiments which can measure ozone concentration in ambient air at 0.001-1 ppm. The first embodiment includes a stretched elastic material and a standard which can give ozone concentration in response to degree ... | 09/03/2002 |
| 6368867 | Monitor for verification of ozone reaction The present invention provides an ozone processing monitor and a method of using the same in ozone processing to determine whether sufficient ozone treatment has occurred on a production part needing ozone treatment. The ozone processing monitor of the pr... | 04/09/2002 |
| 6362005 | Nitrogen dioxide gas sensing method, nitrogen dioxide gas sensor element, and nitrogen dioxide gas sensor using the same In this invention, a mixture of a diazotizing reagent which reacts with nitrous ions to produce a diazo compound, a coupling reagent which couples with a diazo compound to produce an azo dye, and an acid is placed in pores of a transparent porous body to ... | 03/26/2002 |
| 6348355 | Testing element for the colorimetric determination of oxidizable components in gas mixtures A testing elements for the calorimetric determination of oxidizable gas and/or vapor components in gas mixtures is provided. The testing element contains, besides usual oxidizing agents, at least one redox indicator, which is in the oxidized form. The red... | 02/19/2002 |
| 6287518 | Sterilization monitors A sterilization monitor includes a substrate and an monitor composition. The monitor composition contains a colorant and a halogen source and undergoes a distinct color change when exposed to a peracid. The sterilization monitor can be used to monitor a s... | 09/11/2001 |
| 6284198 | Self appearing warning sign device and method of manufacture A self-appearing warning sign device and method for the manufacture of a self-appearing warning sign device including a relatively thin gas impermeable support member upon which a coating is superimposed having a composition containing one or more chromog... | 09/04/2001 |
| 6228657 | Environmental material ticket reader and airborne hazard detection system An airborne hazardous material reader device capable of receiving a collection element. The reader device has a body forming a slot area for receiving the collection element. The body has a crushing mechanism located within the slot area for breaking ampu... | 05/08/2001 |
| 6117685 | Ozone indicator and ozone detecting ink The invention provides a method of detecting ozone expediently and with high sensitivity. The invention, therefore, is directed to an ozone indicator comprising (1) at least one color-change layer comprised of an ozone sensor ink and (2) at least one non-... | 09/12/2000 |
| 6063631 | Sterilization indicator A sterilization indicator includes a substrate and indicator composition. The indicator composition contains a colorant, such as acid fuchsin, that undergoes a distinct color change if exposed to hydrogen peroxide vapor. The sterilization indicator can be... | 05/16/2000 |
| 6048495 | Detector tube A detector tube with a rod-shaped reagent carrier placed into a transparent tube, which reagent carrier is provided with a detection substance, such that the reagent carrier can be placed into the detector tube in a simple manner and that defined flow con... | 04/11/2000 |
| 5972714 | Atmospheric ozone concentration detector An ozone detector in the form of two basic embodiments which can measure ozone concentration in ambient air at 0.001-1 ppm. The first embodiment includes a stretched elastic material and a standard which can give ozone concentration in response to degree ... | 10/26/1999 |
| 5955025 | Chemical vapor sterilization indicating materials Provided is a system for indicating exposure to a chemical vapor sterilization process. This system comprises a composition applied to a suitable support, which composition comprises a component which is chromatically transformed by the action of a vapor ... | 09/21/1999 |
| 5895627 | Simplified ethylene oxide sterilization test pack A test pack for evaluating an ethylene oxide sterilization process, comprising an open ended fiber board tubular member, an end cap enclosing each end of said tubular member, said end caps defining a test chamber within the tubular member, one of said end... | 04/20/1999 |
| 5849591 | Method of determining the component of a gas in a gas sample The invention is directed to a method for determining the portion of a gaseous or vaporous component in a gas mixture utilizing a detecting substance which can enter into a chemical reaction with the component to produce a coloration of the detecting subs... | 12/15/1998 |
| 5789175 | Pressure actuated exposure mechanism for sterilant indicator A sheet of chemically sensitive paper (54) that exhibits a measurable change in a physical property, such as color, when exposed to a chemical environment is inserted between two sections (20, 22) such that an area of the paper is exposed to the chemical ... | 08/04/1998 |
| 5759492 | End of life monitor for a gas filter An end of life monitor apparatus for a filter that removes an undesirable gas including: (a) an elastic material, which degrades in the presence of the undesirable gas; (b) a support member coupled to the elastic material; and (c) an indicator component m... | 06/02/1998 |
| 5753508 | Method of testing a function of a detector at an inspection station and apparatus therefor In a method of testing a function of at least one detector at an inspection station (S) for containers, particularly in an inspection unit (R) for multi-trip bottles, a test gas is fed from a source (10) to the inspection station, or as the case may be to... | 05/19/1998 |
| 5726068 | Diffusive sampler system for determining chemical vapor levels A diffusive sampler for effectively determining chemical vapor levels, the ampler having a thin pouch-like container made up of an impermeable back sheet and a selectively permeable front membrane attached thereto along its peripheral edges. The front memb... | 03/10/1998 |
| 5635403 | Sample containment card for air or station contamination monitoring system and process A tracking and identification card for an air filter specimen, the card having a sheet-like base with a substantially flat support surface for supporting the specimen, the base having a substantially uniform thickness of from about 3 to about 20 mil, and ... | 06/03/1997 |
| 5620656 | Packaging systems for peracid sterilization processes Devices useful to monitor whether or not an article has been exposed to sterilizing conditions are provided and comprise a package and an indicator associated with the package. The package is sufficiently permeable to admit sterilizing gas or vapor into t... | 04/15/1997 |
| 5556761 | Test strip for blood glucose testing A test strip for determining blood glucose levels comprising a reagent which incorporates a dye color. Whole blood reacts with the reagent of the test strip resulting in a color change on the reagent portion of the strip which is controlled by the dye col... | 09/17/1996 |
